Shoulder pack



FIG. 1 is a right-front perspective view of the shoulder pack;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the figures depict portions of a shoulder pack and stitching that form no part of the claim. 

CLAIM The ornamental design for shoulder pack, as shown and described. 